(19)

(11)

EP 2 567 530 A1

(12)

(43) Date of publication: 13.03.2013 Bulletin 2013/11 (21) Application number: 10718963.1 (22) Date of filing: 05.05.2010

(51) International Patent Classification (IPC):  H04L 29/08(2006.01) (86) International application number: PCT/EP2010/056061 (87) International publication number: WO 2011/137931 (10.11.2011 Gazette 2011/45)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR (71) Applicant: Nokia Siemens Networks OY 02610 Espoo (FI)	(72) Inventor: BAKOS, Balazs H-2045 Törökbálint (HU)